synchronous frequency
| encoding technique
| synchronous frequency abbr. | |
| tech. | 同步频率 |
| encoding technique abbr. | |
| tech. | 编码技术 |
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| 同步频率 | |||
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synchronous frequency : 8 phrases in 5 subjects |
| Air defense | 1 |
| Electric machinery | 1 |
| Electronics | 2 |
| Information technology | 1 |
| Technology | 3 |